◇ There is no need to thaw in advance when making frozen steamed buns, which simplifies pre-work and reduces scrap ◇ Use the perforated plate to steam frozen steamed buns, the water vapor convection effect is good, and the efficiency is good ◇ Mantou is a baked noodle product, and the density of frozen ingredients is lower than that of meat, so it can be steamed directly ◇ High-pressure saturated water vapor, water molecules are fine and penetrable, fast without thawing